Microsoft Excel, part of the Microsoft Office product suite, is a spreadsheet application for Windows and Macintosh platforms.
An integer overflow in the REPT function allows command execution when a user loads an Excel file containing a specially crafted formula within a cell.
Install the patch referenced in Microsoft Security Bulletin 08-057.
Exploit works on Microsoft Excel 2003 SP3 and requires a user to open the exploit file.
There may be a delay before the connection is established after the user opens the file.